MPX Magnetostrictive Level Sensors
Installation Guide
For MPX-F
R
Automation Products Group, Inc.
1025 W 1700 N Logan, UT 84321
Thank You
Thanks for purchasing a MPX series magnetostrictive level sensor from us! We appreciate your
business and your trust. Please take a moment to familiarize yourself with the product and this
manual before installation. If you have any questions, at any time, don’t hesitate to call us at 888-
525-7300.
1.Description
2. How To Read Your Label
3. Warranty
4. Dimensions
5. Installation Guidelines &
Instructions
6. Sensor and System Wiring
7.General Care
8. Repair Information
9. Hazardous Location Wiring
Table of Contents
5
Installation Guidelines & Instructions
The MPX should be installed in an area--indoors or outdoors--which meets the following
conditions:
• Ambient temperature between -40°F and 185°F (-40°C to 85°C)
• Relative humidity up to 100%
• Altitude up to 2000 meters (6560 feet)
• IEC-664-1 Conductive Pollution Degree 1 or 2
• IEC 61010-1 Measurement Category II
• No chemical corrosive to stainless steel (such as NH
3
, SO
2
, Cl
2
, etc.)
• Ample space for maintenance and inspection
Additional care must be taken to ensure:
• The probe is located away from strong magnetic elds, such as those produced by motors,
transformers, solenoid valves, etc.
• The medium is free from metallic substances and other foreign matter.
• The probe is not exposed to excessive vibration.
• The oat(s) t through the mounting hole. If the oat(s) does/do not t, it/they must be
mounted on the stem from inside the vessel being monitored.
• The oat(s) is/are oriented properly on the stem (See Figure 5.1 below). MPX-F oats are
installed by customer.
4
Dimensions
NOTE: Scan the QR code to the right to see the full
user manual on your tablet or smartphone. Or visit
www.apgsensors.com/support to nd it on our website.
Part # 122950-0033
Doc #9004830 Rev B
Each label comes with a full model number, a part number, and a serial number. The model
number for the MPX will look something like this:
The model number correlates with all the congurable options and tells you exactly what you have.
Compare the model number to the options on the datasheet to identify your exact conguration.
You can also call us with the model, part, or the serial number and we can help you.
You’ll also nd all hazardous certication information on the label.
SAMPLE: MPX-F3-ZY-F2.5WB-120
The MPX-F series magnetostrictive level sensor provides highly accurate and repeatable level
readings in a wide variety of liquid level measurement applications. It is certied for installation
in hazardous areas in the US and Canada by CSA for Class I, Division 2 and Class I, Zone 2
environments.
1
Description
2
How To Read Your Label
3
Warranty
MPX-F Dimensions
Figure 5.1
UP
Taper
This product is covered by APG’s waranty to be free from defects in material and workmanship
under normal use and service of the product for 24 months. For a full explanation of our Warranty,
please visit https://www.apgsensors.com/about-us/terms-conditions. Contact Technical Support to
receive a Return Material Authorization before shipping your product back.
Scan the QR code below to read the full explanation of our Warranty on your tablet or smartphone.
IMPORTANT: Floats must be oriented properly
on the stem, or sensor readings will be inaccurate
and unreliable. Untapered oats will have a sticker
indicating the top of the oat. Remove sticker prior to
use.
Assemble sensor mounting, oat(s), weight and pins at installation location, if possible.
• Slide mounting option onto stem. Loosen compression cap so it will slide easily on stem.
• Note: If the oats do not t through the tank/vessel mounting hole, mount them on the stem
from inside the vessel being monitored. Then secure the sensor to the vessel.
• Slide oats onto stem. If using two oats, slide the lighter oat on rst. Tops of oats will be
indicated by sticker. After ensure top of oat is toward MPX-F sensor head, remove sticker.
• For sensors with oat stops, refer to the assembly drawing included with the sensor for oat
stop installation locations.
• Insert weight on end of stem. Hold in place with clevis pin.
• Insert cotter pin in clevis pin. Bend ends of cotter pin back to lock pins into place.
Install MPX-F sensor on tank
• When lifting and installing the sensor be sure to minimize the bending angle between the
rigid stem at the top and bottom of the sensor and the exible stem in-between. Sharp bends
at those points could damage the sensor.
• If your sensor’s stem and oats t through the mounting hole, insert the weight and the oats
into the mount opening.
• Carefully unroll and feed the MPX-F sensor stem into the tank. Slide the mount up to the top
of the stem.
• When the weight is on the bottom of the tank, secure the mounting option to the vessel.
• Take any slack out of the exible stem. Tighten the compression tting to hold stem in place.
Electrical Installation Instructions:
• Remove the housing cover of your MPX.
• Feed Systemwires into MPX through 3/4” NPT conduit openings. Fittings must be UL/CSA
Listed for CSA installation.
• Connect wires to MPX terminals. Use crimped ferruls on wires, if possible.
• Replace the housing cover.
• For lightning and surge protection on MPX-F4 models, either connect the grounding screw
(see Dimensions section 4) to an earth ground, or ensure that tank mounting of MPX is
grounded.
See Electrical Connections and System Wiring Diagrams (section 6) for Modbus and 4-20 mA
wiring examples.
BOT DEADBAND
6.0"
[152mm]
TOTAL LENGTH
TOP DEADBAND
10.0"
[254mm]
MEASURABLE LENGTH (PER ORDER)
MOUNTING OPTION FLOA T(S)
7.03"
[179mm]
4.34"
[110mm]
4.98"
[126mm]
2x ø2.76"
THRU
FLOA T
STOP
2x 3/4" NPT
CONDUIT
OPENINGS
4.34"
[110mm]
MPX-F STEM
ASSEMBLY
HOUSING
ADAPTER
HOUSING
GROUND
SCREW